import java.util.Scanner;

public class day08 {
    public static void main(String[] args) {
        int[] arr={21,19,12,39,46,76,23,92,37,54,25,74,20,13,53};

    }
    public static int search(int[] arr){
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int index = -1;
        for (int i = arr.length-1; i >= 0; i--) {
            if (a==arr[i]){
                index =  i;

            }
        }
        return index;
    }
}

